The leak led to the resignation of Britain’s ambassador to the United States, Kim Darroch. President Trump had said his administration would no longer work with Mr. Darroch, whose memos had described the Trump White House as clumsy and inept. Mr. Darroch said he could no longer properly do his job.
British officials say they believe the leak was not a result of computer hacking and seems to have been carried out by an insider.
The Official Secrets Act prohibits public servants from making “damaging” disclosures of classified material. It is aimed at civil servants and others in the government with access to sensitive information.
Foreign Secretary Jeremy Hunt, who is jousting with Boris Johnson to become the next prime minister, tweeted on Saturday that the person responsible for the leak must be found and held responsible, but he differed with the police over whether the publication of leaks was a possible crime.
U.K. Police Criticized for Warning Media Not to Publish Diplomatic Leaks – The New York Times